Chew and Eat

You can see me on trees. My body is round and yellow.

I am very healthy. You can squeeze me and drink me in summer.

I taste sour.

Who I am?

People buy me to eat but never eat me.

What I am?

I am made of milk. You keep me in the fridge.

I am cold and you like to eat me in the summer.

Who am I?

It is purple. It is Long.

It is a softer vegetable. It grows from a plant.

What is it?

What has to be broken before you can use it?